[rules-users] accumulate vs collect
Hi List,
I'm trying to count the number of objects I have in the Working Memory
using accumulate, but I'm having a ClassCastException thrown at me.
Using a variant with collect, everything work OK.
Can someone shed some light on this issue?
Is it related to https://jira.jboss.org/browse/JBRULES-2202 ?
I'm using Drools.5.0.1 and the fact is a declared one, as follows:
declare t_1
regRowId : String
versionId : String
c_7 : String
c_1 : String
c_2 : String
c_3 : String
c_4 : String
c_5 : String
c_6 : Double
end
trying with :
v945 : Number ( doubleValue >= 1 ) from accumulate ( p : t_1 ( c_6 >=
20100511 && c_7 == "5" ) , count(p) )
I'm getting a ClassCastException:t_1, while using :
v945 : ArrayList ( size >= 1 ) from collect ( t_1 ( c_6 >= 20100511 &&
c_7 == "5" ) )
works OK.
The reason I'm preferring accumulate over collect, is that I'm not really
interested in constructing an ArrayList of the matched facts (worries
about memory consumption), all I want is how many of them are there.
The actual rule I'm using (although I don't think it matters) for the
accumulate variant, is:
rule "r95944.6"
dialect "mvel"
when
gnId : GoodNumbers()
LogicalValue : Trader( gnId.goodNo==goodNo )
v945 : Number ( doubleValue >= 1 ) from accumulate ( p : t_1 ( c_6
= 20100511 && c_7 == "5" ) , count(p) )
then
RaResultCode rrc = new RaResultCode();
rrc.setResultRuleId("95944");
rrc.setResultRuleVersionId("6");
rrc.setResultColor("R");
rrc.setResultRuleCode("01");
rrc.setResultAction("1");
rrc.setResultGoodNo(gnId.goodNo);
insertLogical(rrc);
end
Thank you for your time.
-Stathis